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探讨了ＷＣ－Ｃｏ硬质合金饱和磁化强度的影响因素、磁化机制和比饱和磁化强度４πσ与抗弯强度σ（ＴＲＳ）的关系。结果表明，影响ＷＣ－Ｃｏ合金４πσ的主要因素是γ相含量和γ相成分，其次是γ相结构。其４πσ同合金标称钴含量或合金碳含量间均不存在单一性对应关系。γ相分布和热处理及添加稀土元素对合金４πσ的影响，实质上仍归结为上述基本因素的作用。ＷＣ－Ｃｏ合金的４πσ同抗弯强度间并不存在明确的对应关系，因而难以用饱和磁化强度（Ｍｓ或４πσ）取代σ（ＴＲＳ）的测定。
The factors that affect the saturation magnetization of WC-Co cemented carbide, the mechanism of magnetization and the ratio of saturation magnetization 4πσ to flexural strength σ (TRS) were discussed. The results show that the main factors affecting the 4πσ of WC-Co alloy are γ phase content and γ phase composition, followed by γ phase structure. Its 4πσ with the nominal cobalt content of alloy or alloy carbon content does not exist between the single correspondence. γ phase distribution and heat treatment and the addition of rare earth elements on the alloy 4πσ impact, in essence, still boils down to the above basic factors. WC-Co alloy 4πσ with the bending strength does not exist between the clear correspondence, it is difficult to saturation magnetization (Ms or 4πσ) instead of the determination of σ (TRS).